253520401 has 8 divisors (see below), whose sum is σ = 270243200. Its totient is φ = 237135600.

The previous prime is 253520383. The next prime is 253520413. The reversal of 253520401 is 104025352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 253520401 - 2⁵ = 253520369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (253523401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82950 + ... + 85951.

It is an arithmetic number, because the mean of its divisors is an integer number (33780400).

Almost surely, 2^253520401 is an apocalyptic number.

It is an amenable number.

253520401 is a deficient number, since it is larger than the sum of its proper divisors (16722799).

253520401 is a wasteful number, since it uses less digits than its factorization.

253520401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168999.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 253520401 is about 15922.3239823840. The cubic root of 253520401 is about 632.9037045288.

Adding to 253520401 its reverse (104025352), we get a palindrome (357545753).

The spelling of 253520401 in words is "two hundred fifty-three million, five hundred twenty thousand, four hundred one".